<!DOCTYPE html>
<html lang="zh-CN">
    <head>
        <meta charset="UTF-8" />
        <title>08_案例练习-计算2和3的和</title>
    </head>
    <body>
        <script>
            // function f1(){
            //     console.log(2 + 3);
            // }

            // f1();


            function f1(){
                return 2 + 3;
            }

            // var a = f1();
            // console.log(a);

            console.log(f1());
        </script>
    </body>
</html>